EPDM Liquid Rubber Roofing FAQ

No matter what kind of building we’re talking about, the roof usually doesn’t get a lot of thought.

Sure, it’s important – vital, actually – but it tends to get a lot less attention than other features.

That is, until something bad happens to it. When a leak shows up, you’ll have a hard time thinking about anything other than your roof, for example.

Fortunately, if you’re trying to decide on an option, EPDM liquid rubber roofing has proven itself to be head and shoulders above the competition again and again. If you’re considering it, the following FAQ should help you with your decision.

What Is EPDM?

EPDM stands for ethylene propylene diene terpolymer. It’s a synthetic form of rubber that can be applied as a liquid but then cures and hardens. You will also find it sold as a solid, but we’re only going to cover the liquid version in this FAQ.

How Much Does EPDM Liquid Rubber Roofing Cost?

This is a common question, although it’s a difficult one to answer. There are simply too many variables involved to generalize what it will cost to have EPDM applied to your roof.

That being said, it usually costs a bit more than the average options. At the same time, given the value you’ll receive, most people would say it’s definitely worth it.

How Long Does Installation Take?

Likewise, there’s no way to give a definitive answer to this one, but it’s usually going to be a much quicker process than other roofing installations. This is because liquid EPDM can be applied like paint. You literally just need to mix it with water and then use a brush or roller to slather it on your roof.

Whether you plan on doing this by yourself or hiring a professional, the liquid only takes about a day to fully cure. It’s also an extremely quiet process, which many people appreciate considering how loud the alternatives can be.

Is EPDM Liquid Rubber Roofing Used for Residential Properties?

Yes, you can absolutely use EPDM roofing for residential homes. The liquid version can be applied below the shingles. People often use this material to do repairs, as well.

EPDM is also fantastic for commercial properties. The flat surfaces of many of these buildings make it extremely easy to apply this liquid, but it also works just fine on vertical surfaces.

What About My Climate?

No matter where you live, your climate will not be an issue. EPDM has been tested in conditions too extreme to even be realistic and never had a problem. Whether your roof will face blistering summers or brutal winters, EPDM will not break.

How Long Does It Last?

Studies have been done on EPDM roofs and found that after even 30 years, the material was as good as new. It’s not an exaggeration to say this may be the last roofing application you ever use.

Hopefully, this has answered your main questions about EPDM. While you may have to see it to believe it, at least you now have the information required to understand it’s the best choice for your roof.

Liquid EPDM Rubber Might Be Right for You

Do you have a home or business in need of roof repair? Maybe the roof has not shown any signs of problems yet, but you would like to have a bit more peace of mind with some added protection. One of the methods of protecting the roof and dealing with leaks is liquid EPDM rubber. It has been around for many years, and it is extremely popular today thanks to all the benefits it can offer.

Understanding Liquid EPDM Rubber

The term stands for ethylene propylene diene terpolymer and it is, as the name suggests, a type of rubber that comes in liquid form. You can apply this rubber in a manner similar to paint; right on your flat roof. Whether it is a home or business, the product will adhere to the roof, usually without the need of a primer at all. It goes on like a liquid, but once it dries and cures, it becomes a rubber barrier.

It Provides Excellent Durability

One of the nice things about liquid EPDM rubber is the fact that it can last a long time, and it is highly durable when it comes to things such as temperature variances. Whether it is freezing or the heat outside is blistering, you can rely on the liquid EPDM rubber roof to work well and last. It has the potential to last much longer than other types of coatings people typically use for their roofs.

Simple to Apply

One of the other reasons people really like the liquid EPDM rubber is the fact that it is so easy to apply. You do not need to hire the professionals to do it if you have the time to do it on your own. Since it goes on like paint, you can apply it to a large roof with a roller in little time. You can add it to the more delicate areas with a brush. Once you apply the rubber, it will start protecting your roof right away. Even if it starts to rain, you will find that it provides you with protection immediately, so you can stop worrying about leaks.

You might be wondering how many coats of the liquid EPDM you will need to use. Fortunately, you only need to have one coat in the majority of cases. This should be enough to provide you with the protection your roof deserves.

While you have other options for getting your roof the protection it needs, you will find that liquid EPDM has so many advantages that it is the clear choice for most people. If you plan to use this product for your roof, make sure you measure your roof first to get an idea of just how many gallons of the product you will need. Be sure to follow the instructions from the manufacturer for the application of the product as well. This will ensure you do it right and that your roof is protected from the elements.

EPDM Roof Coatings Provide the Protection You Need

When you have a home or business, you want to take precautions to make sure it is safe and sound all the time. You make sure the electricity and the plumbing are working properly. You have locks and alarms. However, you might not think about the roof very often. This can lead to some issues though. Just because the roof is out of sight does not mean it should be out of mind. You need to take the time and put in the effort to care for your roof if you want to make sure it lasts. Fortunately, this is easier today than you might think. You can use EPDM roof coatings. They can help in a number of ways.

Waterproof the Roof

Naturally, one of the biggest dangers for any roof is the possibility of developing a leak. A leak, especially when it goes undetected, can cause some serious damage to the structure of the roof and the walls. It can also become a breeding ground for mold, which could cause healthy issues. When you have EPDM roof coatings, the Liquid Rubber provides a barrier that will keep the water from getting into any cracks or open seams that might be on the roof. If you have noticed some leaks, or you are concerned about the potential of leaks in the future, this product can help you.

Energy Efficient

Here is something many people do not consider, but the EPDM roof coatings have the potential to be good for energy efficiency as well. Most of the time, you will find that the product comes in white. This could be a good option for homes and businesses that have areas with hot summers and relatively warm winters. It will help to reflect sunlight, which can keep things cooler inside of the building. EPDM roof coatings are available in black as well. This might be a good option for someone who is in a colder environment. It will do a better job of absorbing heat and it could lower the cost of heating slightly.

Highly Durable Coatings

The EPDM roof coatings also happen to be very durable, which means they have the potential to last for many years without reapplication. Naturally, this means it is a cost-effective option. A single coat could last for 20 years or more. Even though it is durable and can withstand temperature changes, you will still want to get up on the roof occasionally. Clean it off and look for any potential damage from debris.

Easy Installation

People also love the fact that they will have easy installation with the EPDM roof coatings. It goes on similar to how you would apply paint. It is a liquid and once it is on, it starts to dry and cure into the rubber membrane that protects the roof. You do not have to hire anyone to install the coating, as it is a good and easy DIY project for most people. Just make sure you follow the instructions.

Benefits of Choosing Liquid Rubber

Are you on the hunt for a roofing product that will provide your home or business with better overall protection from rain, leaks, and other problems? If you have a flat roof, you might want to start considering the benefits of Liquid Rubber. It can provide a substantial number of advantages when compared with other types of roof coatings.

Tried and True

When you are searching for products you can use for your roof, you want to have something you can trust. You do not want to put your faith in a fly by night product that might not work well. Liquid Rubber has been in use for decades now, and it has been a very popular option because it works so well in so many different situations. You will find that it provides a substantial number of benefits that help to make it the smart choice for anyone who wants to keep their roof safe from the elements.

Handles Temperature Fluctuations

One of the issues that some types of coatings have that Liquid Rubber manages to handle well is temperature differences. Those who have hot summers and freezing winters know that many materials will expand and contract during this time. Lesser quality products tend to crack, which means they could allow water to get in, and that can cause leaks. You want coatings on the roof to prevent this from happening. Fortunately, Liquid Rubber can expand and contract along with the building, almost like a skin. This provides you with the protection you need no matter the temperature and the weather.

Application Is Easy

Of course, one of the benefits that many people tout when they talk about Liquid Rubber is the easy of application. Because it is liquid and goes on like paint, you do not need to have any special skills to apply this to your roof. You can do it on your own with a roller and some brushes. Those who have large roofs, such as a commercial business, might want to hire a team of people to handle the application process though.

Fast Curing

Once you apply the product, you will find that it starts to set and cure almost immediately, as long as the temperature is above 55 degrees F. Even if it were to start raining as soon as you finish applying the Liquid Rubber, it would still provide your roof with waterproofing protection. The actual amount of time it will take to cure completely will depend on the weather, naturally.

No More Leaks

If you have leaks or if you are worried about the possibility of leaks in the future, you will find that it is no longer a problem. The Liquid Rubber will provide a barrier between your roof and the world outside. No more worries about leaks or the damages that they can cause.

As you can see, the product offers a substantial number of benefits. It is also a cost-effective option. If you are looking for a quality way to keep your roof safe, this is one of the best ways to do it.

Common Questions and Answers about EPDM Rubber Coatings

When it comes time to repair or replace your roof, it is essential that you know about the options available. Certainly, you can choose to replace or repair with asphalt shingles, sheet metal and other products. However, EPDM rubber coatings offer a number of benefits that you might not be aware of, and that can make a big difference in your ultimate choice. Not sure what EPDM is, or why you might opt for this roofing solution? Let’s answer a few of the most common questions.

What’s EPDM All About?

EPDM is a type of rubber. It’s used in a very wide range of industries, from the automotive segment to refrigerator manufacturing. Due to the ingredients (ethylene, propylene and diene monomer), EPDM is able to withstand numerous chemicals, heat, cold and the elements, including UV exposure.

What Colors Are EPDM Rubber Coatings Available In?

EPDM is available in either white or black. It cannot be dyed. However, both color options actually offer benefits that go beyond mere aesthetics. For instance, black EDM rubber coatings can be used in colder climates to help ensure better heat retention (by absorbing more heat), reducing HVAC costs. In warmer climates, white EPDM can be used to achieve the reverse. The white color reflects more light and heat, keeping the building cooler and reducing air conditioning costs.

Does EPDM Become Brittle Over Time?

While some products on the market will become brittle over time, leading to cracking, fracturing and, ultimately, leaks, EPDM does not. This product remains flexible for the entirety of its lifespan. This ensures that it does not crack and break, creating leaks into the building. Because it is flexible, it is able to expand and contract with heat and cold, and as the building itself shifts. This increases its lifespan well beyond competing products.

Can EPDM Rubber Coatings Be Installed on Business Roofs?

Yes, EPDM is actually an ideal solution for roofing repairs or reroofing at business locations. Many business buildings have flat roofs, which encourage standing water. EPDM is completely impermeable, meaning that it can remain submerged for a year or longer without suffering any performance degradation. It is also waterproof from the instant it is applied to the roof, ensuring protection immediately.

What Sort of Maintenance Is Needed with EPDM Rubber Coatings?

EPDM coatings for roofs need very little in the way of maintenance, particularly compared to other roofing options on the market. All you will need to do is clean it periodically to ensure that dirt, dust and debris are removed. There is no need for any sort of surface treatment to be applied.

How Long Do EPDM Rubber Coatings Last?

EPDM roofs can last 40 years or longer, without any degradation or reduction in performance. This makes it an ideal solution for homes and businesses, particularly considering the low cost as compared to competing products.

EPDM rubber coatings make ideal reroofing or roof repair options, combining outstanding durability with low cost and high performance.

Why Is Liquid Rubber an Ideal Solution for Roof Leaks?

Roof leaks can quickly become costly repairs – even a minor leak can cause serious damage to the interior of your home or business. Repairing it quickly is essential, but you need to know more about your options here. While there are certainly many potential repair solutions, Liquid Rubber is an ideal choice for many homes and business locations. What makes it such a good choice?

One Application in Many Instances

One of the most important advantages of Liquid Rubber for roof repairs is that in many instances, all you need is a single coating. Just apply the material to your roof, let it cure, and you’re done. Many competing products require at least two coats, and some need more than that. Every coat represents more time, effort and cost.

Possibly No Primer Needed

With most competing products, you’ll need a coating of primer below the rubber in order to ensure a complete seal. That’s not the case with Liquid Rubber in all instances. For instance, most metal roofs do not need any primer applied. That includes galvanized, aluminum and copper roofing. You also don’t need to use primer if you’re applying Liquid Rubber to an EPDM rubber roof, or to vinyl or acrylic. However, you will need a coat of primer if you have one of the following roof types:

  • Built-up asphalt
  • Modified asphalt roll roofing
  • Asphalt shingles
  • Sanded stainless steel
  • TPO
  • Foam
  • PVC

Environmentally Friendly

The need to “go green” has become apparent and matters a great deal to today’s home and business owners. The less impact you have on the environment, the better. Liquid Rubber is one of the few environmentally-friendly liquid roof coating solutions on the market today, allowing you to repair your roof without causing further environmental damage, or exposing yourself, your family or your customers to noxious, possibly toxic, fumes.

Simple to Apply

With most roofing products, installation is a complicated, drawn out process. Reroofing with asphalt shingles can take a week depending on the size of your roof. Rolling out asphalt roofing rolls is only marginally faster. However, Liquid Rubber goes on fast – it can even be sprayed on with the right equipment. That ensures the shortest possible time to completion, giving you the protection you need from leak-related damage in less time.

The Ultimate in Water Resistance

All roofs must be able to resist water, but this is particularly important in the case of flat roofs, where ponding water can be a year-round threat. Liquid Rubber is up to the task. In fact, it can withstand being completely submerged for the entire year, which is not something that competing products can claim. Add to that the fact that it is freeze and heat resistant from 40 degrees below to 300 degrees F, and you begin to see just how high-performing it is.

When it comes to repairing your roof or re-roofing entirely, the choice is clear – Liquid Roof offers the performance, benefits and environmental protection that you demand.

How to Repair EPDM Rubber Roof Seams

If your commercial building has an EPDM rubber roof membrane, it’s crucial to keep an eye out for problems and to correct them properly in order to prevent further damage and leaks to the building’s interior.

If, during a routine inspection of the roof, any rippling, gaps, or tearing are discovered, the following steps should be performed to secure the laps or patches.

  • Pull back the lap to a secure point in the seam and remove debris.
  • If there is evidence of a leak, inspect the insulation and decking material. Replace wet insulation and make any necessary deck repairs before applying a patch over the damaged area.
  • Next, clean the lap edge, and secure with seam adhesive designed for EPDM rubber, prior to installing the patch.
  • Prepare the surface of the rubber by cleaning away any contaminants or debris within at least a six-inch area of where the patch will meet the EPDM rubber. If the repair point is at an area of flashing, do the same to the flashing. If there is any field-applied coating, remove this as well.
  • Clean the area with water and mild trisodium phosphate soap, using a bristle brush. Rinse and allow to air dry, or quicken the process with a squeegee and clean lint-free cloths.
  • Cut the EPDM rubber patch large enough to go four inches past the damaged area on all sides, rounding the corners of the patch to prevent peeling.
  • Use a solvent recommended by the membrane manufacturer to clean the area to be repaired. Use a clean side of the cloth for each pass in order to prevent dirt from being redistributed into the membrane. Allow the area to thoroughly dry, so that there is streaking remaining. If the manufacturer cannot be determined, you can use unleaded gas, xylene, or heptane to clean the area.
  • Apply compatible primer to both the existing EPDM rubber surface as well as the patch, and allow to dry.
  • Apply compatible adhesive to the patch and the membrane, according to the adhesive’s instructions. For EPDM, this will be a butyl-based adhesive. It is vital that the adhesive is applied at the recommended thickness in order to hold up over the long term. Allow the adhesive to dry thoroughly.
  • Put the two surfaces together, smoothing them together with even pressure from a gloved hand. Use a roller to secure the bond.
  • Apply lap sealant to the lap edge. You can also add a piece of six-inch wide flashing for added protection. If flashing is used, apply the lap sealant to the edges of this strip rather than along the EPDM rubber lap.
  • If applicable, replace ballast material over the repair once the sealant has dried to the touch.

Taking the time to perform each step properly will maximize the chances of the repair holding. Any dirt or debris left on the membrane’s surface before patching it can interfere with the integrity of the repair, making a clean work area the most important component of the process.

Do You Need EPDM Rubber Roof Repair?

If you own a business, how often do you stop to think about the roof above your head? If you are like many business owners out there, the “roof above your head” is a term you use when talking about money, as in, “it’s keeping a roof over my head.” We’re talking about the literal roof that’s above you. If something were to go wrong with that roof, you would have to rely on insurance to fix things and to pay for any ruined stock from a leak, for example. If you haven’t thought about your roof in a while, it might be time that you did. You could have some problems up there that you aren’t even aware of right now, or maybe you are trying to figure out how to deal with some roof issues that you just found out about recently. EPDM rubber roof repair could be what you need.

What Should You Watch for on Your Roof?

One of the biggest problems that you could face with your business’s roof is water, particularly ponding water. This can cause some huge problems. Not only does the water have the potential to slowly leak into your building, as it is usually a sign of a problem with the roof, but it could actually cause a catastrophic failure in your roof. Imagine the roof suddenly giving way and flooding your retail space or your stockroom. How much damage would it do? How long would it take for your business to recover?

If ponding water isn’t a problem for you, then it could be damage from the sun. If the roof starts to show signs of sun damage, if could mean that the roof or membrane is weakening. The next time it rains, a slow leak could start. You might be able to patch those holes as they appear here and there. However, getting a full EPDM rubber roof coating could be a much better option for you.

In addition, you should look for other signs of damage on the roof. There could be cracks or holes in the roof from any number of things. Wind damage, damage caused by flying debris, such as broken tree limbs, and even damage from chemicals can cause some issues with the roof. The sooner you notice these issues the sooner you can take action to remedy them.

In many cases, you will find that using EPDM rubber roof coatings is a good fix. It also happens to be easy and cost effective. If you have a relatively small roof, then you can apply it on your own. If the roof is greater than 5,000 square feet though, you will likely want to hire the pros for the job. In addition, it will only take a single coat, and when applied properly, it has the potential to keep your roof in great shape for decades to come. Before you start worrying about the costs of an entire new roof, look into EPDM rubber roof coatings and see if they will work for you.

Rubber Roof Coatings and Other Roofing Options

There are a number of different types or roofing options that you can consider for flat roof commercial and residential buildings. When you are choosing the type of membrane or coating that you will be using, it’s a good idea to know what each of them is able to offer so you can make the right choice. Let’s look at some of the various choices that are out there.

Built Up Membranes

These types of roof coatings are made of felt that’s been impregnated with asphalt and then embedded in bitumen. They tend to be thick (although the thickness can vary). On top of the membrane, the roofers will place crushed stone or some other aggregate, which can help to protect it from wear and from damage caused by the sun. While this can be durable, it tends to be heavy, and it might not be the right choice for all roofs out there.



This is a type of rubber roof coating that is applied in sheets. The thickness of the sheets can vary – between 0.030 and 0.120 inches thick. At the seams, they are joined by an adhesive. These types of coatings are feasible in some cases, but it is important to remember that they have some drawbacks. Namely, they are vulnerable to UV rays from the sun, so they need to have a protective layer added to them. They can also be vulnerable to oxidizing chemicals and aromatic solvents. In addition, if the adhesive is not applied properly, it could create a gap. Water could seep into the gap and then get into the roof.

Vinyl or PVC

Another rubber roof coating is vinyl or PVC. This is an affordable option, and the sheets are put together with hot air welding, or solvent welding in most cases. Again, they are vulnerable to UV rays, as well as coal tar and petroleum based products.

Liquid Rubber Roof Coatings

One of the best and most reliable methods of protecting your flat roof, whether it is a commercial building or a residential building, such as an apartment complex, is Liquid Rubber. The coating goes on easily, like paint, and that means that there are no seams to worry about. It is able to stand up to temperature extremes at both ends of the thermometer, and it is waterproof from the moment that you apply it. It is a cost effective product as well. It only needs to have a single coat, and it is easy enough to apply that you could likely do it on your own if you have the time. As mentioned, it goes on just like paint. When applied correctly, it can last for decades.

While there are many different types of roofing options, including rubber roof coatings, you need to think about what’s right for your building and your budget. The liquid rubber roof coatings tend to be the smart option for those who are looking to save money, time, and frustration.

Why You Need EPDM Roof Coatings

Have you been thinking about getting EPDM roof coatings for the roof or your business, or even your home? These types of coatings have a substantial number of benefits, and they could be a perfect solution for you. Of course, before you make your final decision, it is a good idea to check all of the different benefits that these types of roof coatings can offer. Some of these you might already know about, but some might be new to you.


Of course, this is one of the most important reasons to use the EPDM roof coatings. When you apply the rubber coating, it will provide immediate waterproofing. Even if you apply it today, and it starts to rain five minutes after you complete the installation, you are protected from that rain. Water simply will not be able to penetrate the coating, so your roof, and everything that is inside down below, will be safe.

Heating and Cooling

Most of the time, the EPDM roof coatings are going to be white. The coatings are UV resistant, and when you paint your roof white with the coating, it is going to reflect more sunlight. This can keep things cooler inside of your building, and could be a good solution for those who live in areas where it is hot much of the year. It can reduce your need to use air conditioning inside. Those who live in areas that have long winters might want to take the opposite approach. They can choose a black coating, which will absorb the heat from the sun, and could actually help to keep the building warmer in the winter.

Easy to Install

Another one of the reasons you should consider getting EPDM roof coatings is because you can apply them on your own if you wish. If you have ever painted a room, you have the basic idea of how to apply these coatings. You can use a paint roller and a brush with the coating, which goes on just like paint. You mix it up with the catalyst and follow the instructions. It’s fast and easy. If you have a large roof, you might want to hire the professionals for the job, of course.

Durable Coatings

The EPDM roof coatings are meant to last. You aren’t going to need to reapply them every couple of years, and that means that they are a good investment. Instead, you apply a single coat one time, and it can last for decades. It’s going to be a great feeling to have a roof that can give you peace of mind until your kids go off to college.

These are some of the biggest and most talked about benefits with EPDM roof coatings. If you are in need of some protection for your roof, this is only one of the first options you will want to consider, but as you learn more about the coating, you will find that it’s actually the only one you need to consider.